What size springs should I run in a Tial 50mm BOV and a Tial 44mm WG. Its a 385ci LT1.. Do I need to pull vaccum to tell what springs for both?

 

For the BOV, I think an 11psi spring is standard. Yu shouldnt have to worry too much about that unless you noticed the BOV bleeding bost off during boosting.

Now for the wastegate, the spring has 2 options:

1. It should be close to what boost level you want and then you use a boost control to increase it a little more. Example: If you want to run 20psi, you can probably run a 15psi spring and then use the boost controller to get you to 20psi.

2. Run a spring equal to the boost you want to run..